//package com.abl.javabasis._08_generics;
//
//public class TestFather<T, M> {
//}
//
////全部保留
//class son1<T, M> extends TestFather<T, M> {
//}
//
////部分保留、部分变更
//class son2_1<T, Integer> extends TestFather<T, Integer> {
//}
//
////部分保留、部分变更
//class son2_2<T> extends TestFather<T, Integer> {
//}
//
////全部变更
//class son3<A, B> extends TestFather<A, B> {
//}
//
////擦除
//class son4<T, M> extends TestFather<T, M> {
//}